JPS5662205A - Fixed optical attenuator - Google Patents

Fixed optical attenuator

Info

Publication number
JPS5662205A
JPS5662205A JP13780379A JP13780379A JPS5662205A JP S5662205 A JPS5662205 A JP S5662205A JP 13780379 A JP13780379 A JP 13780379A JP 13780379 A JP13780379 A JP 13780379A JP S5662205 A JPS5662205 A JP S5662205A
Authority
JP
Japan
Prior art keywords
lens
metal ion
silicic acid
acid glass
obtd
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP13780379A
Other languages
Japanese (ja)
Inventor
Kenichi Tsuchinuma
Takeshi Koseki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP13780379A priority Critical patent/JPS5662205A/en
Publication of JPS5662205A publication Critical patent/JPS5662205A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/26—Optical coupling means
    • G02B6/264—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting
    • G02B6/266—Optical coupling means with optical elements between opposed fibre ends which perform a function other than beam splitting the optical element being an attenuator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

PURPOSE:To obtain a fixed attenuator free from the return of reflected light by providing optical attenuating characteristics controlled to predetermined values to a focusing rod lens made of silicic acid glass contg. metal ion. CONSTITUTION:Focusing rod lens 10 is obtd. by mixing 0.01-0.1wt% Cu<2+>, Cr<3+>, Fe<2+> or other metal ion into silicic acid glass consisting essentially of SiO2, B2O3, Na2O and Tl2O3. A pair of optical fibers 11, 12 are coupled to the light beam incident and emergent parts of lens 10, respectively while allowing their optical axes to agree with each other. The metal ion mixed into the silicic acid glass as impurity causes light absorption due to material absorption in lens 10, resulting in high quality lens 10 with very high purity and no optical attenuating characteristics. Thus, an attenuator free from the return of reflected light can be obtd.
JP13780379A 1979-10-26 1979-10-26 Fixed optical attenuator Pending JPS5662205A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13780379A JPS5662205A (en) 1979-10-26 1979-10-26 Fixed optical attenuator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13780379A JPS5662205A (en) 1979-10-26 1979-10-26 Fixed optical attenuator

Publications (1)

Publication Number Publication Date
JPS5662205A true JPS5662205A (en) 1981-05-28

Family

ID=15207207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13780379A Pending JPS5662205A (en) 1979-10-26 1979-10-26 Fixed optical attenuator

Country Status (1)

Country Link
JP (1) JPS5662205A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4650209A (en) * 1985-02-26 1987-03-17 Mazda Motor Corporation Vehicle rear suspension system
US4930805A (en) * 1983-04-02 1990-06-05 Mazda Motor Corporation Vehicle rear suspension system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4930805A (en) * 1983-04-02 1990-06-05 Mazda Motor Corporation Vehicle rear suspension system
US4650209A (en) * 1985-02-26 1987-03-17 Mazda Motor Corporation Vehicle rear suspension system

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